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adelina 88 [10]
3 years ago
6

0.4x + 28.5 = 281 Solve for x.

Mathematics
1 answer:
mash [69]3 years ago
6 0

Answer:

Step-by-step explanation:

281-28.5=252.5

252.5 divided by 0.4=631.25

X=631.25

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Hector and Evelyn are solving the following problem. Find x,y, and z in this 45-45-90 triangle.
Murljashka [212]

Answer: A. They are both incorrect

Step-by-step explanation:

x=3√2

y=6

z=3√2

-----------------------

45-45-90=1:1:√2

------------------------

solve for x

x is the side accordingly to 90 in the smaller triangle, so it should be the [45] side times √2

3×√2=3√2

-----------------------

solve for y

y is the side accordingly to 90, so it should be the [45] side times √2

3√2×√2=6

----------------------

solve for z

z is the side accordingly to 45 in the bigger triangle, x is also accordingly to 45 in the bigger triangle

z=x

z=3√2

8 0
3 years ago
Aarti posted a comment on her blog. Each day the number of responses to her comment was 125% of the number she received on the p
kozerog [31]

Answer:

156 were there on the fourth day.

Step-by-step explanation:

125% of the number she received on the previous day

This means that the previous day number is multiplied the 125%/100% = 1.25.

64 responses the first day

This means that the number of responses after x days is given by:

R(x) = 64(1.25)^x

How many were there on the fourth day?

This is R(4). So

R(4) = 64(1.25)^4 = 156

156 were there on the fourth day.

4 0
3 years ago
Find the total amount<br> $16.000 at 14% compounded<br> semiannually for 2 years
Liono4ka [1.6K]

Answer:

The answer would be 20.97273616 or (rounded to the nearest cent) would be $20.97

Step-by-step explanation:

The reason for this is that the formula for compounded interest is A=P(1+\frac{r}{n})^\frac{t}{n} where A is the total amount, P is the initial amount, r is the growth factor or the percent, n is the number of compounding periods, and t is the time. You would substitute P for 16, r for 0.14 (14%), n for 2 as it compounded semiannually so it for every 6 months instead of 1 year (annual) so is compounded 2 times per year, and t for 2. And just solve the equation and you get that A is equal to 20.97273616 but since we are talking about money( only round if asked) then it would be 20.97.

Hope this helps!!!!  

6 0
3 years ago
Read 2 more answers
Robert can paint a certain wall in 4 minutes, while it takes Jack 12 minutes to paint the same wall. How long will it take Rober
olga_2 [115]
It will take 24 minutes.
this is because the lowest common multiple is 24.

hope this helps you
3 0
3 years ago
IM RUNNING OUT IF TIME CAN SOMEONE PLEASE HELP
Elenna [48]

Answer:

the third option

Step-by-step explanation:

hope this helps! have a good day and stay safe!

3 0
3 years ago
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